Metal-cutting instrument.



'PATENTED JULY 28, 1908.

C. DELGAMPB. MET-AL CUTTING INSTRUMENT.

APPLIC'ATION FILED MAR.13.1907.

GYRILLE DELGAMPE, OF QUINCY, MASSACHUSETTS.

METAL-CUTTING INSTRUMENT.

Specification of Letters Patent.

Patented m as, 1908,

Application filed March 13, 1907. Serial No. 362,229.

To all whom-it may concern;

Be it known that I, CYRILLE DELCAMPE, a

subject of the King of Belgium, residing at; the city of Quincy, in the county of Norfolkand State of Massachusetts, have invented certain new and useful Improvements in Metal-Cutting Instruments; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the-same.

My invention relates to improvements in cutting attachments for blow-pipes and the like, and the object is to, provide a conven ient Working tool for carrying on that process of cutting metal, which consists in first heating the metal at the regionof the desired cut, and then burning out the metal to form the cut by means of a fine oxidizing j et;

The heating device may be a blow-pipe, or

other equivalent heating instrument, and the;

attachment comprises primarily an auxiliary nozzle for the oxidizing jet mounted on the heating instrument bymeans of an oflsetrotatable support so as to be capable of rotation about the axis of the heating instrument.

The construction and operation of the improved devlce Will be understood from a consideration of the following description in connection With the accompanying drawings.

In the drawings: Figure 1 is an elevation of a blowpipe, provided with my attachment shown partly in section; Fig. 2 is a sectional detail view of the attachment head on an enlarged scale. I

The blow-pipe is shown as having a head ,a, the supply pipes A and B, the tubular handle D and the main exit nozzle (Z in the head. The auxiliary nozzle (1 for the oxidizing jet is supported on the blowpipe, in such a position that the blow-pipe flame and the oxidizing jet are slightly convergent, by means of the offset tubular arm t, which is rotatably mounted on the head a, of the cutting attachment. The head 0 comprises a hood '1 which sets over the head of the blowpipe, inclosing the upper end of the supply pipes, and is held in place by a key 4*.

Within the hood 1' and forming part of the head isa chamber s-in which the oxygen pipe C terminates. This chamber has a lateral tubular projection .8 into which the reduced end of the bent arm t carrying the auxiliary,

nozzle d fits, and this reduced end is provided with a flange t which takes against the end of the tubular projection s The flanged screw collar t screws onto the tubular projection s and engages the other side of the flange t to secure the arm 25 in a fixed position with relation to the bloW-pipe The head a of the attachment is so constructed that the.

axis of the tubular projection .s. coincides with the axis of the blow-pipe nozzle (1. By

looscninf the screw collar t the arm tmay be.

full lines above the main nozzle and in dotted'hnes below 'thesame to mdicate its adjustability. The oxygen pipe C is provided. just above and in close proximity to the handle I) with a shut-oil cock 0 and the pipe below the cock is bent toward the handle D and isprovided with two plugs f, which fit into corresponding'holes in the handle YD," thus affording an additional means of fastening the cutting attachment to. the blow-pipeand also aflording a convenient handlefor the instrument.

In use this attachment may be secured to -a blow-pipe or other heating instrument of appropriate construction, and after-the spot to be cut is heated -by the heating'instrument the cock 6 is opened to allow the oxygen to flow through the jet nozzle (1 onto the heated spot to form 'the cut. The instrument is used for the purpose of cutting .plates, pipes, manholes in boilers, and the like,-and is indeed generally available as a portable metal-cutting instrument which may becarried to, and used upon the Work to be done. 'It is for this reason that the auxiliary nozzle forthe oxidizing jet is made adjustable about the heating nozzle. this construction, it it is desired, for example, to stand in front of a vertical sheet and cut down, the auxiliary'nozzle is placed in the position indicated in full lines in Fig.1 and the instrument is mo ed down to form the cut. If now it is desired to cut up, it is only necessary to turn the auxiliary nozzle to the position shown in dotted lines in Fig. 1 and move the instrument up. So, if it is desired to cut to the left, the auxiliary nozzle isplaced at the right of the main nozzle,

With

and if is'desired to cut to the rightfthe auxiliary nozzle is placed to the leftof the main nozzle, etcf; In each case, theauxiliary nozzle is made to trail the main nozzle without 'necessitatingthe twisting of the supply pipes or awkward'movements on the art of the operator.

It will be understood-that the attachment is secured to the blow-pipe 'by'slipping the hood of the attachment over the head of the blow-pipe and insertingthe key r, andthat whereas, in the drawings the attachment axis of rotation of the arm t shall be substantially in line with the axis of the heating instrument.

'What I claim is i Y.

1. In a metal-cutting instrument, the combination with a blow-pipe having ahead terminating in a main nozzle, of an attachment therefor comrising a hood adapted to engage the hea a gas chamber in said hood, gas supply connections to, said. chamber, an outlet from said chamber having its axis in alinement with the axis of the main nozzle, a bent tubular arm journaled in said outlet and supporting at its free end an auxiliary nozzle in proximlty to the main nozzle of the blowpipe, and means for locking said arm in different, os'itions of rotation, substantially'as de' scri fed. 2. In a metal cutting instrument, the combinatior'iwith-a blow-pipe having a head terminatin in a main nozzle, of an attachment "for said low-pipe carrying a hollow bearing having its axls in line with the axis of the main nozzle, gas connections to said hollow bearing, anauxiliary nozzle having a tubular support journaled in said bearing and by which it is sup orted in proximity' to the main nozzle, and means for'locking said -su port in different positions in its-bearing, su

stantially as described. 1

3. A cutting attachment for blow-pipes comprising a head having a hollow bearing,

' gas connections to said hollow bearing,

. means for attaching the head to: the blowpipe with the axis of the hollow bearing in ine with the axis of the blow pipe nozzle, an

hollo'w' bearing, an auxl iary et-nozzle supported thereby in proximity to the blow-pipe nozzle, and means for locking the sup ort 1n different positions in its bearing, su stantially as described.

4. A cutting attachment for blow-pipes comprising ahead having a bearing, means for attaching the head to the blow-pipe with .the axis of the bearing in line with the axis of port journa ed in the bearing, an auxiliary et-nozzle supported thereby, gas connections to said auxiliary jet-nozzle, and means for looking the support in different positions in its bearing, substantially as described.

5. In a metal-cutting instrument, the com bination with a'blow-pipe comprising a head terminating in a main nozzle, a plurality of gas supply pipes terminating in said head, and a cylindrical sheathing surroundin said pipes and serving as a handle for the lowsaid auxiliary nozzle, and means for detach to said cylindrical sheathing, substantia y as described. J

bination with a blow-pipe comprising a head terminating in a main nozzle, a plurality of gas supply and a cylin ripal sheathing surrounding) said pipes and serving as a handle for the lowpipe, of a cuttingattachment comprising an auxiliary nozzle mounted in proximity to the main nozzle, anauxiliary gas supply pi e for said auxiliary nozzle, means for detachably securing the gas supply ipe to the c lindrical sheathing, and a codlr in the a 'ary gas supply pipe in proximity to the sheathmg, substantlally as described.

ii testimony whereof I afiix my signature, in presence of two witnesses.

Witnesses: v

F. L. BRAKE,

ANDRF': BELTZER.

offset tubular nozzle sup ort Journaled in the,

the blow-pipe nozzle, an oflset nozzle sup-- pipe, of a cutting attachment comprising an auxiliary nozzle mounted in proximity to themam nozzle, an auxiliary gas supply pipefor 6. In a metal-cutting instrument, the com-- ably securing the auxiliary gas supplyl'lpipe ipes terminating in said head, 

